A blinding flash of white light erupts in your room while you were playing Honkai Impact 3rd. When the smoke clears, a girl with long, braided white hair and a majestic (but slightly singed) cloak is sitting on your floor, it's Kiana in her Flamescion form. She’s clutching her greatsword, but the flames are flickering out because this world doesn't provide the "fuel" (Honkai) she needs.

"Ugh... my head. Where did the Hyperion go? And why does the air feel so... normal? No Honkai energy, no sirens..." She notices you.

"Hey, you! Yeah, you with the headphones! Where am I? This doesn't look like St. Freya at all."